Results 41 to 50 of about 43,563 (210)

Photoionization of Rydberg atoms in optical lattices

open access: yesNew Journal of Physics, 2021
We develop a formalism for photoionization (PI) and potential energy curves (PECs) of Rydberg atoms in ponderomotive optical lattices and apply it to examples covering several regimes of the optical-lattice depth.
R Cardman   +4 more
doaj   +1 more source

Ultrafast dynamics of neutral superexcited Oxygen: A direct measurement of the competition between autoionization and predissociation

open access: yes, 2012
Using ultrafast extreme ultraviolet pulses, we performed a direct measurement of the relaxation dynamics of neutral superexcited states corresponding to the nl\sigma_g(c^4\Sigma_u^-) Rydberg series of O_2. An XUV attosecond pulse train was used to create
Arvinder Sandhu   +3 more
core   +1 more source

Photochemistry of Aromatic N‐Oxides in Water Probed by Time‐Resolved X‐ray Absorption Spectroscopy

open access: yesChemistry – A European Journal, EarlyView.
Time‐resolved XAS at the nitrogen and oxygen K‐edges is applied to the photorearrangement of two N‐oxides in water. Pyridine N‐oxide rapidly forms the oxaziridine isomer. Pyridazine N‐oxide undergoes ring opening to the diazo compound, without any evidence of intermediates.
Maximilian Paradiz Domínguez   +3 more
wiley   +1 more source

Quantum Spin-Ice and Dimer Models with Rydberg Atoms

open access: yesPhysical Review X, 2014
Quantum spin-ice represents a paradigmatic example of how the physics of frustrated magnets is related to gauge theories. In the present work, we address the problem of approximately realizing quantum spin ice in two dimensions with cold atoms in optical
A. W. Glaetzle   +5 more
doaj   +1 more source

Quantum Chemistry in Basel

open access: yesCHIMIA, 1999
As an example of our work, a recent study of the Rydberg states and dissociation pathways of the H3O Rydberg radical is reviewed.
Martin Jungen
doaj   +1 more source

Experimental verification of minima in excited long-range Rydberg states of Rb_2 [PDF]

open access: yes, 2006
Recent theoretical studies with alkali atoms A$^{\ast}$ excited to high Rydberg states predicted the existence of ultra long-range molecular bound states.
A. Gallagher   +7 more
core   +2 more sources

Energy Landscapes in Chemical Reactions and Transport

open access: yesChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Kinetics/dynamics of chemical reactivity and transport of chemical species in a solid are both determined by the energy landscape in which they take place. Discussing common grounds but also distinct differences may help in advancing the understanding in both fields.
Karl‐Michael Weitzel
wiley   +1 more source

Indium tin oxide films meet circular Rydberg atoms: Prospects for novel quantum simulation schemes

open access: yesPhysical Review Research, 2020
Long-lived circular Rydberg atoms are picking up increasing interest for boosting coherence times in Rydberg-based quantum simulation. We elaborate a novel approach to stabilize circular Rydberg states against spontaneous and blackbody-induced decay ...
Florian Meinert   +6 more
doaj   +1 more source

Long-range Rydberg molecules, Rydberg macrodimers and Rydberg aggregates in an ultracold Cs gas

open access: yes, 2016
We present an overview of our recent investigations of long-range interactions in an ultracold Cs Rydberg gas. These interactions are studied by high-resolution photoassociation spectroscopy, using excitation close to one-photon transitions into $n$p$_{3/
Deiglmayr, Johannes   +2 more
core   +1 more source

Correlations of Rydberg excitations in an ultra-cold gas after an echo sequence [PDF]

open access: yes, 2009
We show that Rydberg states in an ultra-cold gas can be excited with strongly preferred nearest-neighbor distance if densities are well below saturation.
Ates, C.   +6 more
core   +2 more sources

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